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Plasma emission spectrometry

RF ICP Source. In ICP-OES, the sample is usually introduced to the instmment as a stream of liquid. The sample solution is nebulized and the aerosol transported to the [Pg.483]

The ICP torch is designed with narrow spacing between the two outermost tubes, so that the gas emerges at a high velocity. The outer tube is designed so that the argon flow in [Pg.484]

The design of the DCP source is shown in Fig. 7.25. Two jets of argon issue from graphite anodes. These join and form an electrical bridge with the cathode, which is made of tungsten. In operation, the three electrodes are brought into contact, voltage is [Pg.486]

Electronic excitation temperatures in a helium MIP are on the order of4000 K, permitting the excitation of the halogens, C, N, H, and other elements that cannot be excited in a flame atomizer. The lower temperature results in less spectral interference from direct line overlap than in ICP or high-energy sources, but also causes more chemical interference. [Pg.489]

The detectors used in ICP and DCP systems include PMTs, CCDs, and CIDs. One variation of the CCD used for ICP is the segmented array CCD or SCD. The SCD has individual small subarrays positioned on a silicon substrate in a pattern that conforms to the echellogram pattern (Fig. 7.28). More than 200 subarrays are used they cover approximately 236 of the most important wavelengths for the 70 elements routinely measured by ICP emission spectrometry. The SCD differs from a standard CCD in that the individual subarrays can be rapidly interrogated in random order (much like a CID). The SCD detector responds from 160 to 782 nm. [Pg.490]


Elemental Analysis Atomic absorption spectrometry X-Ray fluorescence spectrometry Plasma emission spectrometry... [Pg.310]

Atomic Absorption/Emission Spectrometry. Atomic absorption or emission spectrometric methods are commonly used for inorganic elements in a variety of matrices. The general principles and appHcations have been reviewed (43). Flame-emission spectrometry allows detection at low levels (10 g). It has been claimed that flame methods give better reproducibiHty than electrical excitation methods, owing to better control of several variables involved in flame excitation. Detection limits for selected elements by flame-emission spectrometry given in Table 4. Inductively coupled plasma emission spectrometry may also be employed. [Pg.243]

Inductively coupled argon plasma (icp) and direct current argon plasma (dcp) atomic emission spectrometry are solution techniques that have been appHed to copper-beryUium, nickel—beryUium, and aluminum—beryUium aUoys, beryUium compounds, and process solutions. The internal reference method, essential in spark source emission spectrometry, is also useful in minimizing drift in plasma emission spectrometry (17). Electrothermal (graphite... [Pg.68]

The commercial ores, beryl and bertrandite, are usually decomposed by fusion using sodium carbonate. The melt is dissolved in a mixture of sulfuric and hydrofluoric acids and the solution is evaporated to strong fumes to drive off siUcon tetrafluoride, diluted, then analy2ed by atomic absorption or plasma emission spectrometry. If sodium or siUcon are also to be determined, the ore may be fused with a mixture of lithium metaborate and lithium tetraborate, and the melt dissolved in nitric and hydrofluoric acids (17). [Pg.69]

MetaUic impurities in beryUium metal were formerly determined by d-c arc emission spectrography, foUowing dissolution of the sample in sulfuric acid and calcination to the oxide (16) and this technique is stUl used to determine less common trace elements in nuclear-grade beryUium. However, the common metallic impurities are more conveniently and accurately determined by d-c plasma emission spectrometry, foUowing dissolution of the sample in a hydrochloric—nitric—hydrofluoric acid mixture. Thermal neutron activation analysis has been used to complement d-c plasma and d-c arc emission spectrometry in the analysis of nuclear-grade beryUium. [Pg.69]

Sulphate in Waters, Effluents and Solids (2nd Edition) [including Sulphate in Waters, Effluents and Some Solids by Barium Sulphate Gravimetry, Sulphate in waters and effluents by direct Barium Titrimetry, Sulphate in waters by Inductively Coupled Plasma Emission Spectrometry, Sulphate in waters and effluents by a Continuous Elow Indirect Spectrophotometric Method Using 2-Aminoperimidine, Sulphate in waters by Elow Injection Analysis Using a Turbidimetric Method, Sulphate in waters by Ion Chromatography, Sulphate in waters by Air-Segmented Continuous Elow Colorimetry using Methylthymol Blue], 1988... [Pg.315]

Atmospheric pressure spray with electron impact ionisation Atomic plasma emission spectrometry... [Pg.751]

Boumans PWJM (1991) Measuring detection limits in inductively coupled plasma emission spectrometry using the SBR-RSDB approach -I.A tutorial discussion of the theory. Spectrochim Acta 46B 431... [Pg.237]

Hioki et al. [215] have described an on-line determination of dissolved silica in seawater by ion exclusion chromatography in combination with inductively coupled plasma emission spectrometry. [Pg.103]

This method was developed as a second independent method to complement the usual colorimetric procedure in the determination of a certified concentration of dissolved silica in a seawater reference material. Ion exclusion affords a separation of the dissolved silica not only from major seawater cations but also from potentially interfering anions. The detection unit limit, conservatively estimated at 2.3 ng/g Si (0.08. im), is superior to that achievable by direct analysis using inductively coupled plasma emission spectrometry. [Pg.104]

Mykytiuk et al. [184] have described a stable isotope dilution sparksource mass spectrometric method for the determination of cadmium, zinc, copper, nickel, lead, uranium, and iron in seawater, and have compared results with those obtained by graphite furnace atomic absorption spectrometry and inductively coupled plasma emission spectrometry. These workers found that to achieve the required sensitivity it was necessary to preconcentrate elements in the seawater using Chelex 100 [121] followed by evaporation of the desorbed metal concentrate onto a graphite or silver electrode for isotope dilution mass spectrometry. [Pg.287]

It has been reported that the differential determination of arsenic [36-41] and also antimony [42,43] is possible by hydride generation-atomic absorption spectrophotometry. The HGA-AS is a simple and sensitive method for the determination of elements which form gaseous hydrides [35,44-47] and mg/1 levels of these elements can be determined with high precision by this method. This technique has also been applied to analyses of various samples, utilising automated methods [48-50] and combining various kinds of detection methods, such as gas chromatography [51], atomic fluorescence spectrometry [52,53], and inductively coupled plasma emission spectrometry [47]. [Pg.339]

Another relatively simple approach is that of Stolzberg and Rosin [419]. The sample is spiked with an excess of copper, then passed through a Chelex 100 column. The column retains the free copper ion, but passes the copper associated with strong ligands. The chelated copper eluted from the column is measured by plasma emission spectrometry. [Pg.429]

Analytical Measurements. Applications of Plasma Emission Spectrometry. [Pg.9]

The potential for the employment of plasma emission spectrometry is enormous and it is finding use in almost every field where trace element analysis is carried out. Some seventy elements, including most metals and some non-metals, such as phosphorus and carbon, may be determined individually or in parallel. As many as thirty or more elements may be determined on the same sample. Table 8.4 is illustrative of elements which may be analysed and compares detection limits for plasma emission with those for ICP-MS and atomic absorption. Rocks, soils, waters and biological tissue are typical of samples to which the method may be applied. In geochemistry, and in quality control of potable waters and pollution studies in general, the multi-element capability and wide (105) dynamic range of the method are of great value. Plasma emission spectrometry is well established as a routine method of analysis in these areas. [Pg.305]

The content of heavy metals in sediments was determined by sample digestion with 10 ml of the mixture of HCI04, HCI, HN03 and HF at 200°C, followed by Inductively Coupled Plasma Emission Spectrometry (ICP) (ACME, 2003). [Pg.212]

Hatcher, H., Tite, M.S. and Walsh, J.N. (1995). A comparison of inductively-coupled plasma emission spectrometry and atomic absorption spectrometry analysis on standard reference silicate materials and ceramics. Archaeometry 37 83-94. [Pg.72]

Soltanpour PN, Johnson GW, Workman SM, Jones JB, Jr., Miller RO. Inductively coupled plasma emission spectrometry and inductively coupled plasma-mass spectroscopy. In Bartels JM (ed.), Methods of Soil Analysis Part 3 Chemical Methods. Madison, WI Soil Science Society of America and Agronomy Society of America 1996, pp. 91-139. [Pg.319]

Bethell. P. H. and Smith, J. U. (1989). Trace-element analysis of an inhumation from Sutton Hoo, using inductively coupled plasma emission-spectrometry - an evaluation of the technique applied to analysis of organic residues. Journal of Archaeological Science 16 47-55. [Pg.353]

Hart, F. A. and Adams, S. J. (1983). The chemical-analysis of Romano-British pottery from the Alice Holt forest, Hampshire, by means of inductively-coupled plasma emission-spectrometry. Archaeometry 25 179-185. [Pg.367]

Lobinski et al. [72] optimized conditions for the comprehensive speciation of organotin compounds in soils and sediments. They used capillary gas chromatography coupled to helium microwave induced plasma emission spectrometry to determine mono-, di-, tri- and some tetraalkylated tin compounds. Ionic organotin compounds were extracted with pentane from the sample as the organotin-diethyldithiocarbamate complexes then converted to their pentabromo derivatives prior to gas chromatography. The absolute detection limit was 0.5pg as tin equivalent to 10-30pg kg-1. [Pg.415]

Wanatabe et al. [57] have described a method for the separation and determination of siloxanes in sediment, using inductively coupled plasma emission spectrometry. The organosilicon extract with petroleum ether is evaporated to dryness. The damp residue is dissolved in methyl isobutyl ketone, aspirated into the plasma. The detection limit is O.Olmg kg-1. Recoveries are about 50% with a coefficient of variation of about 11%. [Pg.427]

The performance of the system was clearly demonstrated for a wide range of foodstuffs. The data for the NBS (National Bureau of Standards) bovine hver (Table 4.1) shows that the automatic system is capable of giving accurate results. Samples were freeze-dried on receipt. Measurements on manually digested samples were made by atomic-absorption spectrophotometry, and by plasma-emission spectrometry on automatically digested... [Pg.129]

Analytical Techniques Atomic absorption spectrometry, 158, 117 multielement atomic absorption methods of analysis, 158, 145 ion microscopy in biology and medicine, 158, 157 flame atomic emission spectrometry, 158, 180 inductively coupled plasma-emission spectrometry, 158, 190 inductively coupled plasma-mass spectrometry, 158, 205 atomic fluorescence spectrometry, 158, 222 electrochemical methods of analysis, 158, 243 neutron activation analysis, 158, 267. [Pg.457]

Diborane in air may be analyzed by passing air through a PTFE filter and oxidizer-impregnated charcoal. It is oxidized to boron and desorbed with 3% H2O2. Boron is measured by plasma emission spectrometry or ICP emission spectrometry (NIOSH. 1984. Manual of Analytical Methods, 3rd ed. Cincinnati, OH National Institute for Occupational Safety and Health). Boron hydrides can be analyzed by FTIR techniques. [Pg.128]

Furnace Atomization Plasma Emission Spectrometry (EAPES)... [Pg.68]

Inductively Coupled Plasma Emission Spectrometry, Parts I and II, Boumans, P.W.J.M. (Ed.), Wiley, New York, 1987. A comprehensive account of the subject, with good chapters on theory, though now becoming dated. [Pg.185]

Furnace atomization plasma emission spectrometry (FAPES)... [Pg.220]


See other pages where Plasma emission spectrometry is mentioned: [Pg.768]    [Pg.112]    [Pg.171]    [Pg.69]    [Pg.362]    [Pg.362]    [Pg.211]    [Pg.15]    [Pg.259]    [Pg.265]    [Pg.9]    [Pg.298]    [Pg.305]    [Pg.606]    [Pg.29]    [Pg.67]    [Pg.63]    [Pg.145]   
See also in sourсe #XX -- [ Pg.129 ]




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